{"product_id":"les-cometes-et-leurs-secrets-de-lantiquite-a-rosetta","title":"Les comètes et leurs secrets - De l'Antiquité à Rosetta","description":"\u003cp\u003e\u003cstrong\u003e⚠️ This book is written in French.\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eOf all the celestial bodies visible in the sky, comets hold a special place, thanks to a spectacular appearance unmatched by any other class of object. On average, one bright naked-eye comet appears roughly every ten years, and since ancient times these bodies have drawn human attention — long regarded with fear and superstition. It was not until Edmund Halley, in the early 18th century, that the return date of a comet could first be calculated. Since then these 'hairy stars' have been studied scientifically, first from afar with ever more powerful telescopes and, since Halley's Comet passed in 1986, up close with space probes — culminating in ESA's Rosetta mission, which studied comet Churyumov-Gerasimenko in detail until autumn 2016. The goal of all these observations is to better understand the origin of our Solar System, born 4.5 billion years ago. This book clearly explains what science now knows, after Rosetta, about how comets formed. Written for a broad audience, from the casual reader to the science enthusiast and student.\u003c\/p\u003e","brand":"Somabec","offers":[{"title":"Default Title","offer_id":46037383282861,"sku":"LIV7762","price":41.95,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0585\/8259\/7805\/files\/les-cometes-et-leurs-secrets-de-l-antiquite-a-rosetta.jpg?v=1782917624","url":"https:\/\/lenaturaliste.ca\/products\/les-cometes-et-leurs-secrets-de-lantiquite-a-rosetta","provider":"Le Naturaliste","version":"1.0","type":"link"}